How can I implement the data mapper pattern in my application?

How can I implement the data mapper pattern in my application?

The data mapper pattern separates the in-memory objects from the database. You can start by defining your domain models.

What are domain models, and how do I create them?

Domain models represent the core entities of your application. You can create them as classes that encapsulate the business logic.

How do I map these domain models to the database?

You can use a mapping layer that translates between your domain models and the database schema, often using an ORM.

Can you give me an example of a mapping layer?

Sure! A mapping layer can be a class that handles CRUD operations for your domain models, using SQL queries or an ORM like Hibernate.